build的过去式和过去分词是什么？
built
v.建筑;建造;创建;开发;逐渐增强；
是build的过去分词和过去式。
例句They had a house built for them.
The school was built in the late 1970s.
这所学校建于20世纪70年代末。
The number of new houses being built is a good index of a country\'s prosperity.
新建房屋的数目是国家繁荣的一个有用指标。
They built a rough shelter from old pieces of wood.
他们用旧木条搭了一个简陋的窝棚。
The house is built around a central courtyard.
这房子是围绕着中央的庭院而建的。
The team built up a safe cushion of two goals in the first half.
那支球队上半场射进两球，奠定了稳操胜券的基础。
David built us a shed in the back yard.
戴维帮我们在后院搭了个棚子。